In sequence with the previous drabble. The next few are like that as well. I'll drop another author's note when the sequence stops.
Watson knows the story of Lot's wife and the city of Sodom. He knows how she looked back at what she had lost, only to be turned to a pillar of salt.

As he prepares to step off the platform to greet his tentatively smiling friend and one time constant companion, he begins to feel his doubts again, more keenly.

Everything stands against them. The law, the world, Holmes's endless neuroses, even his own treacherously frightened heart. He thinks of the irony, that he is going forward into Sodom.

He thinks of Lot's wife, and he does not look back.